Financial Instruments and Fair Value Measurements - Narrative (Details) € in Millions, £ in Millions		1 Months Ended				3 Months Ended	12 Months Ended
	Dec. 31, 2020 USD ($)	Oct. 31, 2022 USD ($) derivative	Jun. 30, 2022 derivative	Jul. 31, 2020 USD ($) derivative	Jun. 30, 2020 USD ($) derivative	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) derivative	Dec. 31, 2021 USD ($) derivative	Dec. 31, 2020 USD ($) property	Oct. 31, 2022 GBP (£) derivative	Oct. 31, 2022 EUR (€) derivative	Feb. 29, 2020 USD ($) derivative	May 31, 2019 USD ($) derivative	May 31, 2019 GBP (£) derivative	Oct. 31, 2018 USD ($)
Derivative [Line Items]
Provisions for impairment on real estate							$ 25,860,000	$ 38,967,000	$ 147,232,000
Buildings and improvements							29,707,751,000	25,155,178,000
Notional Amount							3,463,200,000	2,731,900,000
Amount reclassified from AOCI							(1,242,000)	(6,802,000)	$ (15,051,000)
COVID Related Properties
Derivative [Line Items]
Number of impaired properties held for investment | property									38
Provisions for impairment on real estate									$ 105,000,000
Term loans | Term loan due March 2024
Derivative [Line Items]
Principal amount															$ 250,000,000
Notes payable | 0.750% notes, issued December 2020 and due in March 2026
Derivative [Line Items]
Principal amount	$ 325,000,000						$ 325,000,000	$ 325,000,000	325,000,000
Stated interest rate (as a percent)							0.75%	0.75%
Notional amount applied to notes payable	100,000,000
Notes payable | 1.800% notes, issued in December 2020 and due in March 2033
Derivative [Line Items]
Principal amount	$ 400,000,000						$ 400,000,000	$ 400,000,000	400,000,000
Stated interest rate (as a percent)							1.80%	1.80%
Notes payable | 5.625% Notes due 2032
Derivative [Line Items]
Principal amount		$ 750,000,000					$ 750,000,000
Stated interest rate (as a percent)		5.625%					5.625%			5.625%	5.625%
Cash flow hedge
Derivative [Line Items]
Amount reclassified from AOCI							$ 28,466,000	$ (6,802,000)	$ (15,051,000)
Cash flow hedge | Designated as hedging instrument
Derivative [Line Items]
Notional Amount							$ 755,500,000	1,092,400,000
Cross-currency swaps
Derivative [Line Items]
Number of derivative instruments terminated | derivative			4
Amount reclassified from AOCI						$ 20,000,000
Cross-currency swaps | Not designated as hedging instrument
Derivative [Line Items]
Number of derivative instruments | derivative							3
Notional Amount							$ 280,000,000.0	0
Cross-currency swaps | Cash flow hedge
Derivative [Line Items]
Number of derivative instruments | derivative		6								6	6		4	4
Notional Amount		$ 600,000,000								£ 612			$ 166,000,000	£ 130
Cross-currency swaps | Cash flow hedge | Designated as hedging instrument
Derivative [Line Items]
Number of derivative instruments | derivative		6					3			6	6
Notional Amount		$ 600,000,000				$ 166,300,000	$ 320,000,000.0	166,300,000			€ 612.0
Number of derivative instruments terminated | derivative			4
Cross-currency swaps | Fair value hedge
Derivative [Line Items]
Number of derivative instruments | derivative		3								3	3
Notional Amount		$ 320,000,000								£ 326
Interest rate swap
Derivative [Line Items]
Interest rate swap unrealized loss expected to be reclassified within next twelve months							$ 11,900,000
Interest rate swap | Cash flow hedge
Derivative [Line Items]
Number of derivative instruments | derivative							1
Interest rate swap | Cash flow hedge | Designated as hedging instrument
Derivative [Line Items]
Number of derivative instruments | derivative							1
Notional Amount							$ 250,000,000.0	250,000,000.0
Foreign currency forwards
Derivative [Line Items]
Cross-currency swap unrealized gains expected to be reclassified within next twelve months							$ (9,800,000)
Foreign currency forwards | Cash flow hedge | Designated as hedging instrument
Derivative [Line Items]
Number of derivative instruments | derivative							30
Notional Amount							$ 185,500,000	176,100,000
Currency exchange swaps | Not designated as hedging instrument
Derivative [Line Items]
Number of derivative instruments | derivative							4
Notional Amount							$ 2,427,700,000	1,639,500,000
Remaining maturities							1 year
Treasury rate locks | Cash flow hedge
Derivative [Line Items]
Notional Amount								$ 500,000,000				$ 500,000,000
Number of derivative instruments terminated | derivative					5
Treasury rate locks | Cash flow hedge | Designated as hedging instrument
Derivative [Line Items]
Number of derivative instruments | derivative												5
Forward-starting swap | Cash flow hedge
Derivative [Line Items]
Number of derivative instruments | derivative					6			6
Notional Amount					$ 500,000,000
Forward-starting swap | Cash flow hedge | Designated as hedging instrument
Derivative [Line Items]
Number of derivative instruments | derivative							6
Forward-Starting Swaps Redesignated | Cash flow hedge
Derivative [Line Items]
Number of derivative instruments | derivative								4
Notional Amount				$ 350,000,000				$ 350,000,000
Number of derivative instruments terminated | derivative		6
Number of instruments being amortized | derivative				4
Forward-Starting Swaps Not Redesignated | Cash flow hedge
Derivative [Line Items]
Number of derivative instruments | derivative								2
Notional Amount								$ 150,000,000